diff --git a/aspnetcore/release-notes/aspnetcore-10.0.md b/aspnetcore/release-notes/aspnetcore-10.0.md
index b18926db30ad..b73a7fa8825e 100644
--- a/aspnetcore/release-notes/aspnetcore-10.0.md
+++ b/aspnetcore/release-notes/aspnetcore-10.0.md
@@ -61,7 +61,7 @@ This section describes new features for OpenAPI.
 
 [!INCLUDE[](~/release-notes/aspnetcore-10/includes/OpenApiSchemasInTransformers.md)]
 
-[!INCLUDE[](~/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev17.md)]
+[!INCLUDE[](~/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev.md)]
 
 ### Authentication and authorization
 
diff --git a/aspnetcore/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev.md b/aspnetcore/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev.md
new file mode 100644
index 000000000000..0b261f3e81e2
--- /dev/null
+++ b/aspnetcore/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev.md
@@ -0,0 +1,8 @@
+### OpenAPI.NET updated to Preview.18
+
+The OpenAPI.NET library used in ASP.NET Core OpenAPI document generation was upgraded to [v2.0.0-preview18](https://www.nuget.org/packages/Microsoft.OpenApi/2.0.0-preview.18). The v2.0.0-preview18 version improves compatibility with the updated library version.
+
+The previous v2.0.0-preview17 version included a number of bug fixes and improvements and also introduced some breaking changes. The breaking changes should only affect users that use document, operation, or schema transformers. Breaking changes in this version that may affect developers include the following:
+
+* [Ephemeral object properties are now in Metadata](https://github.com/microsoft/OpenAPI.NET/blob/main/docs/upgrade-guide-2.md#ephemeral-object-properties-are-now-in-metadata)
+* [Use HTTP Method Object Instead of Enum](https://github.com/microsoft/OpenAPI.NET/blob/main/docs/upgrade-guide-2.md#use-http-method-object-instead-of-enum)
diff --git a/aspnetcore/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev17.md b/aspnetcore/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev17.md
deleted file mode 100644
index 1da51018b6be..000000000000
--- a/aspnetcore/release-notes/aspnetcore-10/includes/OpenApiNetUpdatePrev17.md
+++ /dev/null
@@ -1,6 +0,0 @@
-### OpenAPI.NET updated to Preview.17
-
-The OpenAPI.NET library used in ASP.NET Core OpenAPI document generation was upgraded to [v2.0.0-preview17](https://www.nuget.org/packages/Microsoft.OpenApi/2.0.0-preview.17). This version includes a number of bug fixes and improvements and also introduces some breaking changes. The breaking changes should only affect users that use document, operation, or schema transformers. Breaking changes in this iteration that may affect developers include the following:
-
-* [Ephemeral object properties are now in Metadata](https://github.com/microsoft/OpenAPI.NET/blob/main/docs/upgrade-guide-2.md#ephemeral-object-properties-are-now-in-metadata)
-* [Use HTTP Method Object Instead of Enum](https://github.com/microsoft/OpenAPI.NET/blob/main/docs/upgrade-guide-2.md#use-http-method-object-instead-of-enum)
diff --git a/aspnetcore/release-notes/aspnetcore-10/includes/ValidationSupportMinAPI.md b/aspnetcore/release-notes/aspnetcore-10/includes/ValidationSupportMinAPI.md
index 85e9628fe60b..4525d0fc7e9d 100644
--- a/aspnetcore/release-notes/aspnetcore-10/includes/ValidationSupportMinAPI.md
+++ b/aspnetcore/release-notes/aspnetcore-10/includes/ValidationSupportMinAPI.md
@@ -31,3 +31,6 @@ app.MapPost("/products",
         => TypedResults.Ok(productId))
     .DisableValidation();
 ```
+
+> [!NOTE]
+> Several small improvements and fixes have been made to the Minimal APIs validation generator introduced in ASP.NET Core for .NET 10. To support future enhancements, the underlying validation resolver APIs are now marked as experimental. The top-level `AddValidation` APIs and the built-in validation filter remain stable and non-experimental.